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<title>associated_allocator&lt; reference_wrapper&lt; T &gt;, Allocator &gt;::type</title>
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<a name="boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type"></a><a class="link" href="type.html" title="associated_allocator&lt; reference_wrapper&lt; T &gt;, Allocator &gt;::type">associated_allocator&lt;
        reference_wrapper&lt; T &gt;, Allocator &gt;::type</a>
</h4></div></div></div>
<p>
          <a class="indexterm" name="boost_asio.indexterm.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type"></a> 
Forwards <code class="computeroutput"><span class="identifier">type</span></code>
          to the associator specialisation for the unwrapped type <code class="computeroutput"><span class="identifier">T</span></code>.
        </p>
<pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">associated_allocator</span><span class="special">&lt;</span> <span class="identifier">T</span><span class="special">,</span> <span class="identifier">Allocator</span> <span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">type</span><span class="special">;</span>
</pre>
<h6>
<a name="boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type.h0"></a>
          <span class="phrase"><a name="boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type.types"></a></span><a class="link" href="type.html#boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type.types">Types</a>
        </h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Name
                  </p>
                </th>
<th>
                  <p>
                    Description
                  </p>
                </th>
</tr></thead>
<tbody><tr>
<td>
                  <p>
                    <a class="link" href="../associated_allocator/type.html" title="associated_allocator::type"><span class="bold"><strong>type</strong></span></a>
                  </p>
                </td>
<td>
                  <p>
                    If T has a nested type allocator_type, T::allocator_type. Otherwise
                    Allocator.
                  </p>
                </td>
</tr></tbody>
</table></div>
<h6>
<a name="boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type.h1"></a>
          <span class="phrase"><a name="boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type.member_functions"></a></span><a class="link" href="type.html#boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type.member_functions">Member
          Functions</a>
        </h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Name
                  </p>
                </th>
<th>
                  <p>
                    Description
                  </p>
                </th>
</tr></thead>
<tbody><tr>
<td>
                  <p>
                    <a class="link" href="../associated_allocator/get.html" title="associated_allocator::get"><span class="bold"><strong>get</strong></span></a> <span class="silver">[static]</span>
                  </p>
                </td>
<td>
                  <p>
                    If T has a nested type allocator_type, returns t.get_allocator().
                    Otherwise returns type(). <br> <span class="silver"> —</span><br> If T has a nested type
                    allocator_type, returns t.get_allocator(). Otherwise returns
                    a.
                  </p>
                </td>
</tr></tbody>
</table></div>
<p>
          A program may specialise this traits type if the <code class="computeroutput"><span class="identifier">T</span></code>
          template parameter in the specialisation is a user-defined type. The template
          parameter <code class="computeroutput"><span class="identifier">Allocator</span></code> shall
          be a type meeting the Allocator requirements.
        </p>
<p>
          Specialisations shall meet the following requirements, where <code class="computeroutput"><span class="identifier">t</span></code> is a const reference to an object of
          type <code class="computeroutput"><span class="identifier">T</span></code>, and <code class="computeroutput"><span class="identifier">a</span></code> is an object of type <code class="computeroutput"><span class="identifier">Allocator</span></code>.
        </p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
              Provide a nested typedef <code class="computeroutput"><span class="identifier">type</span></code>
              that identifies a type meeting the Allocator requirements.
            </li>
<li class="listitem">
              Provide a noexcept static member function named <code class="computeroutput"><span class="identifier">get</span></code>,
              callable as <code class="computeroutput"><span class="identifier">get</span><span class="special">(</span><span class="identifier">t</span><span class="special">)</span></code>
              and with return type <code class="computeroutput"><span class="identifier">type</span></code>
              or a (possibly const) reference to <code class="computeroutput"><span class="identifier">type</span></code>.
            </li>
<li class="listitem">
              Provide a noexcept static member function named <code class="computeroutput"><span class="identifier">get</span></code>,
              callable as <code class="computeroutput"><span class="identifier">get</span><span class="special">(</span><span class="identifier">t</span><span class="special">,</span><span class="identifier">a</span><span class="special">)</span></code>
              and with return type <code class="computeroutput"><span class="identifier">type</span></code>
              or a (possibly const) reference to <code class="computeroutput"><span class="identifier">type</span></code>.
            </li>
</ul></div>
<h6>
<a name="boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type.h2"></a>
          <span class="phrase"><a name="boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type.requirements"></a></span><a class="link" href="type.html#boost_asio.reference.associated_allocator_lt__reference_wrapper_lt__T__gt__comma__Allocator__gt_.type.requirements">Requirements</a>
        </h6>
<p>
          <span class="emphasis"><em>Header: </em></span><code class="literal">boost/asio/associated_allocator.hpp</code>
        </p>
<p>
          <span class="emphasis"><em>Convenience header: </em></span><code class="literal">boost/asio.hpp</code>
        </p>
</div>
<div class="copyright-footer">Copyright © 2003-2024 Christopher M. Kohlhoff<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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